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A181631
as a simple table
n
a(n)
1
1
2
1
3
2
4
1
5
2
6
3
7
1
8
1
9
2
10
3
11
4
12
1
13
1
14
1
15
2
16
2
17
3
18
4
19
5
20
1
21
1
22
1
23
1
24
1
25
2
26
2
27
2
28
3
29
3
30
4
31
5
32
6
[1,1,2,1,2,3,1,1,2,3,4,1,1,1,2,2,3,4,5,1,1,1,1,1, 2,2,2,3,3,4,5,6]